Flat Lake trout stocking

McCone County, Montana · lake · 2,243 ft elevation

Flat Lake was last stocked 17 months ago (Jun 5, 2025). We have 1 stocking on record since Jun 5, 2025. Species stocked: rainbow trout.

• Stocked less often than most Montana waters on our record.

Weather at Flat Lake

• Tonight
  42°F
  Mostly Cloudy
  6% rain · wind 13 to 17 mph
• Monday
  52°F
  Partly Sunny
  wind 3 to 12 mph
• Monday Night
  39°F
  Mostly Cloudy
  6% rain · wind 6 mph
• Tuesday
  56°F
  Partly Sunny
  6% rain · wind 5 to 13 mph
• Tuesday Night
  39°F
  Partly Cloudy
  wind 6 to 10 mph
• Veterans Day
  55°F
  Sunny
  wind 6 mph

Forecast from the National Weather Service for this location, refreshed hourly.

What is stocked

Stocking history

From Montana fish and wildlife agency reports, collected nightly and kept after the agency takes them down. Agencies revise reports; check the agency's report before you go. Seasons and limits: Montana fishing regulations.

Where is Flat Lake?

McCone County, Montana. The marker is the agency's location for this water; streams are often stocked at several access points.

DirectionsLarger mapMontana fishing regulations

Stocked waters near Flat Lake

• Milk River (Lower Milk River, Upper Milk River, Middle Milk River)stream · 4 mistocked May 6, 2026
• Fort Peck Trout Pondlake · 4 mistocked Oct 1, 2026
• Home Run Pondlake · 16 mistocked Sep 15, 2026
• Big Reservoirlake · 22 mistocked May 8, 2026
• Shoot Reservoirlake · 23 mistocked Jun 11, 2025

All stocked waters in McCone CountyStocked this week in Montana

Questions about Flat Lake

When was Flat Lake last stocked?

The latest reported stocking was Jun 5, 2025 (rainbow trout, 1,000 fish), according to Montana agency reports.

Is Flat Lake stocked often?

Stocked less often than most Montana waters on our record. We count each day the agency reported stocking it.

What kind of trout are stocked in Flat Lake?

Rainbow trout (1 stocking, 1,000 fish).